Baffle



Aug. 17 1926. K596,'54(T D. S. JACOBUS BAFFLE Filed Dec. 24, 1920 3 Sheets- 8h! 1- IN V EN TOR:

ATTORNEYS.

BY ll D. s. JAcoBus- Aug. 17 1926.

BAFFLE Filed-Dec. 24, 1920 35 Sheets-Sheet 2 uvwazvrqm.

BY I '7 ATTORNEYS.

Au 17,1926. 1,596,540 D. S. JACOBUS BAFFLE Filed Dec. 24, 1920 s Shau a-Shoat 5 INVENTOR.

5, By W ATTORNEYS.

Patented Aug. 17 1926.

UNITED STATES DAVID s. JAooBu-s, or JERSEY crry, NEW JERSEY, 'nssrenon {no Inn 3.430001; a

1,596,540 PATENr oFrlc-n wrrcox COMPANY, on revenue, NEW JERSEY, A CORPORATIQNOF Nnw .narnsnsr.v

BAFFLE.

Application filed December 24, 1920. Serial No. 432,985.

. My invention more particularly relates to aibaflle extending across the boiler tubes of a boiler and comprising hardened plastic material, and to the method of making the same.

Myinvention will best be understood by reference to the accompanying drawings, in which like reference characters indicate like parts, and in which Figure '1 isa vertical front View of a baffle embodying my invention, with some ofthe parts broken away; Fig. 2 is a sectional side View of Fig.1; Fig. 3 is a-perspective view illustrating the position of one of the hollow heat conducting members with reference to the boiler tubes; Figs. 4 and 5 are views similar to Figs. 1 and 2, respectively, and illustrating .a slightly modified form of my invention; Fig. 6 is a perspective view similar to Fig. 3 and illustratingthe hollow member shown in Figs. 4: and .5; Fig. 7 is a vertical sectional view taken transversely of the boiler tubes with the hollow members forming a part of the finished baffle in position and illustrating one method of introducing the plastic material; Fig. 8 is a longitudinal section through the tube by which theplastic material is introduced into the baffle; Fig. 9 is a longitudinal section of the tube taken at right angles to Fig. 8 and showing the wings on the lower end of the plunger in closed position; Fig. 10 is a view similar to Fig. 9, showing the wings on thelower end of the plunger in open position, and Fig. 11 is a transverse section taken acrossthe' tubes shown in Figs. 8, 9 and 10.

Referring, now, to the drawings, 12 are the boiler tubes of a steam boiler, here shown as arranged in staggered relation, across which is installed a battle embodying my invention, indicated, in general, in Figs. 2 and 5, by the reference character 13.

In preparing a baffie in accordance with my invention, I first install hollow members 14 of good heat-conductivity, and preferably formed of metal, each member comprising side walls 15-whicl1 are preferably flat and curved at their edges to conformto the boiler tubes, as indicated in Fig. 3, the side walls being connected by transverse walls 16, which preferably conform ,to the surfaces of the boiler tubes,-so that the memberas a whole forms close contactand is in good thermal engagement with the boiler tubes. Themembers 14: are of such a width that they may readily be installed by :pass.

ing :them diagonally between the tubes of .the boiler and then turning them .on edge into the position which they are ztO occupy in the finished bafile,-.-the members being installed in rowstransver'sely of the tubes and: above one another, to form ,a skeleton'for thefinishedbaflie. The members ll are installed in position by arranging :them end ;to end to form a horizontalrow, it being understood that each member may be of any desired length.

In Figs. 4, 5 6,, I have showna slightly modified formxof my invention, in which each hollow member '14 is provided .at one end with .a rib 19 which engages .a recess :20 formed on the adjacent end of the .ad-j acent member 14*, in order to secure the members in .alinement. i y

In case a metal flame-plate is to be used,

the same is installed, .asat 1.7, at one side of -,the hollow members,fl=while the spaces between the members .on ;the opposite Sides 7 thereof are. closed, by removable strips of the baffle by inserting through a diagonal row of hollow members and between the boiler tubes a tube 21, in the manner indicated. in

Fig. 7, the upper end of the tube 21 pre ferably being-providedwith a hopper 22 for containing aniixture of the pla c ma ia 23 from whichthe baffle is to be formed.

The tube .is fiist mo ed downwa d y l o't e bottom of the form, vand the material may be convenientlyforced through the tube bya tool comp is ng av rod -24.en 1arge a its lower end, as at 2,5,, to-form ,a bearing for two wings 26, which are pivoted, as at 27, to the enlarged lower end-25. When the ;rod is f ced downwardly, t e res tan e 'Qfi B C by .the material causes the wings .26 to open to the position indicated in Fig. 10 and to force -.the plastic material downwardly through the tube; whereas when .the rod 24 is withdrawn, .the wings collapse to the plastic material, and thereby the entire bafterial is being forced into the bafile, the tube 2-1 may be moved up and down, so as to press the plastic material firmly in'place', or, if necessary or desirable, a separate member may be used for packing the material. In

building up the plastic portion'of the baffle,

the tube is moved along to the successive diagonal position-s between theboil'er tubes, as indicated in Fig. 1, to first form a single lower layer, the remaining layers beingsimilarly formed. The faces 15 of the member 14 and the flame plate 17 close-one side of the form for the plastic material, while the faces 15 and the strips 18 close the other side thereof. The hollow members 14 preferably form openings which are rectangular in cross-section. The tube 21 is, accordingly, preferably formed rectangular in cross-section, in order to provide for the maximum cross-sectional area of material. When the plastic material has hardened, the strips 18 are removed. The movable strips 18 may be usedat each side of the baflie without employing the cast iron flame plates 17, in which case both sides of the baffle will be made up of the faces 15 of the members 14 and of the material which is initially in a plastic state.

' In a baflle made in accordance with my invention, the boiler tubes serve to carry the heat away from the members 14, which, in turn, conduct the heat from the hardened fie is maintained at a temperature lower than it otherwise have. The members 14, which are preferably formed of cast iron or other good heat-conducting material, also serve to reinforce the face of the battle and thus prevent the face of the baffle from spalling off or eroding, due to the action of the. heat. The reduction of the spalling action of thepart of the baffle formed of hardened plastic material is secured by cooling the baffle in the way described and by male ing the faces 15 of the members 14 form a portion of the face of the baflle, thereby cutting down the surface of contact of the gases with the hardened plastic material. The members 14 reinforce the baflle, thereby making it possible to construct a strong and durable baffle which will not be damaged or affected by puffs or light explosions due to the ignition of combustible gases within the setting.

In place of forcing the'plastic material through the tube 21 by means of the tool comprising the rod 24 enlarged at its lower end and provided with wings 26, the plastic material may be forced through the tube 21 by means of compressed air, or other mechanical means. In case compressed air is used the plastic material is placed in a hopper fitted with an air-tight cover and the compressed air is introduced into the top of the hopper and forces the plastic mate rial through the tube 21. A. stationary hopper may be used and a connection made between the hopper and the tube21 by means of a flexible hose. If so desired, the hopper may be attached directly to the top of the tube 21 and fitted with an airtight cover which would be closed after filling, and com pressed air would then be introduced inside of the hopper through a flexible hose connection. With the latter arrangement the hopper 22 and the tube 21 would be moved as de sired in inserting the plastic material.

What I claim and desire to secure by Let ters Patent of the United States is:

1. A metallic member for a bafiie, said member having relatively thin flat side walls and relatively thin curved end Walls.

adapted to engage boilertubes, said walls being spaced apart to form an opening in the body portionof said member.

2. A metallic member for a baffle having flat side walls and curved end walls adapted to engage boiler tubes, the member being provided with an opening extending therethrough and defined by said side and said end walls.

3. A metallic member for a bafiie having flat side walls and curved end Walls adapted to engage boiler tubes, the member being provided with an opening rectangular in cross section extending therethrough and defined by said side and said end walls.

A form for a-bafiie for a steam boiler having boiler tubes, comprising a row of members across the boiler tubes arranged end to end and supported on the tubes, said members having their ends locked together to hold them in alignment and each of said members having an opening extending therethrough from top to bottom.

5. A form for a battle for a steam boiler having boiler tubes, comprising a row of members across the boiler tubes arranged end to end and supported on the tubes, the adjacent ends of said members being provided with interengaging ribs and recesses ing extending therethrough from top to bottom.

6. In a steam boiler, boiler tubes, and a balile extending across the tubes and comand each of said members having an open a prising rows of members arranged end to end across the tubes and supported thereon, each member having an opening extending into the body portion of the member from at least one of its horizontal faces, and hardened plastic material between 7 members and in said recesses.

7. In a steam boiler, boiler tubes, and a battle extending across the tubes and comprising rows of metallic members arranged said end to end across the tubes and supported thereon and having a good thermal engagement with said tubes, each member having an opening extending into the body portion of the member from at least one of its horizontal faces, and hardened plastic mater'al between said members and in said recesses.

8. In a steam boiler, boiler tubes, and a bafHe extending across the tubes and comprising rows of metallic members arranged end to end across the tubes and supported thereon, each member having a vertical opening extending therethrough, and hardened plastic material between said members and in said openings,

9. In a steam boiler, boiler tubes, and a battle extending across said tubes and comprising hollow metallic members having flat side walls spaced apart and transverse walls having outer surfaces conforming to and adapted to engage boiler tubes, and hardened plastic material between said members and in the spaces between said side walls and extending flush with the outer surfaces thereof. 7

10. In a steam boiler, boiler tubes arranged in rows and a battle extending across the tubes and comprising rows of metallic members each extending across a row of boiler tubes and supported thereon, each member having an opening extending into the body portion of the member from at least one of its horizontal faces, with the tops of said members spaced from the next adjacent row of boiler tubes, and hardened plastic material between the rows of members and in said recesses.

11. In a steam boiler, boiler tubes arranged in rows and a bafile extending across the tubes and comprising rows of metallic members each extending across a row of boiler tubes and supported thereon, each member having an opening therethrough between its horizontal faces, with the tops of said members spaced from the next adjacent row of boiler tubes, and hardened plastic material between the rows of members and in said oepnings.

12. In a steam boiler, boiler tubes arranged in rows and a bafile extending across the tubes and comprising rows of metallic members each extending across a row of boiler tubes and supported thereon, each member having side walls spaced apart and transverse walls having outer surfaces conforming to and adapted to engage boiler tubes, and hardened plastic material between said members and in the spaces between said side walls and extending flush with the outer surfaces thereof.

13. In a steam boiler, boiler tubes arranged in rows with the tubes in the several rows staggered to form diagonal lanes, and a baflle extending across the tubes and comprising rows of metallic members each extending across a row of boiler tubes and supported thereon, each member having side walls and curved end walls engaging boiler tubes and an opening extending therethrough and defined by said side and said end walls, said members being constructed and positioned so that openings in adjacent rows of said members will permit the passage therethrough of a straight tube along each diagonal lane, and hardened plastic material between said members and in said openings.

14. In a steam boiler, boiler tubes ar ranged in rows with the tubes in the several rows staggered to form diagonal lanes, and a battle extending across the tubes and comprising rows of metallic members each extending across a row of boiler tubes and supported thereon, each member having side walls and curved end walls engaging boiler tubes and an opening extending therethrough and defined by said side and said end walls, the tops of said members being spaced from the next adjacent row of boiler tubes and the members in the next adjacent rows, said members being constructed and positioned so that openings in adjacent rows of said members will permit the passage therethrough of a straight tube along each diagonal lane, and hardened plastic material between the adjacent rows of said members and in said openings.

15. In a steam boiler, boiler tubes arranged in rows with the tube-s in the several rows staggered to form diagonal lanes, and a baflle extending across the tubes and comprising rows of metallic'members each extending across a row of boiler tubes and supported thereon with the adjacent ends of said members locked together, each member having side walls and curved end walls engaging boiler tubes and an opening extending therethrough and defined by said side and said end Walls, said members being constructed and positioned so that openings in adjacent rows of said members will permit the passage therethrough of a straight tube along each diagonal lane, and hardened plastic material between said members and in said openings.

DAVID S. JACOBUS. 

